N1:
1931-33. Print. Black, yellow and green. Also all-black, but uncommon.  12.5x20.5 and 21x34.5mm
The first of Gray's Clipper marks, said to be based on a brigantine 'Emily'. Mark N0 (1931-33) omits the words 'HAND-PAINTED'.

Several pots in the pattern range A8150-A8400 have come to light which have N0 or N1 backstamps. The designs would have been created in about 1946/7 and the only logical explanation is that (Stoke) backstamp transfers were in short supply and so a few early (Hanley) ones were pressed into use!